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Pocket H2S Model 300 is the world’s smallest and most affordable hydrogen sulfide detector, alarm and dosimeter. About the size of a key fob and weighing less than 1 oz., this wearable instrument is a highly sensitive, reliable and popular. Range: 0.0 – 50.0ppm; first alarm at 10ppm, second at 20ppm. Also has an 8-hour TWA warning alarm at 10ppm. The instrument self-checks upon start and carries a 1 year instrument warranty.
